ST16C580(2005) データシートの表示（PDF） - Exar Corporation

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ST16C580
(Rev.:2005)

UART WITH 16-BYTE FIFO’s AND INFRARED (IrDA) ENCODER/DECODER

Exar Corporation 

ST16C580

UART WITH 16-BYTE FIFO’s AND

INFRARED (IrDA) ENCODER/DECODER

GENERAL DESCRIPTION

August 2005

The ST16C5801 is a universal asynchronous receiver and transmitter (UART) and is pin compatible with the ST16C550

UART. The 580 is an enhanced UART with 16 byte FIFO’s, automatic hardware/software flow control, and data rates

up to 1.5Mbps. Onboard status registers provide the user with error indications and operational status. Modem

interface control is included and can be optionally configured to operate with the Infrared (IrDA) encoder/decoder. The

system interrupts may be tailored to meet user requirements. An internal loop-back capability allows onboard

diagnostics. The 580 is available in the 48 pin TQFP package. It is fabricated in an advanced CMOS process to achieve

low drain power and high speed requirements.

48 Pin TQFP Package

FEATURES

• Pin to pin and functionally compatible to the Industry

Standard 16550

• 2.97 to 5.5 volt operation

• 1.5 Mbps transmit/receive operation (24MHz)

• 16 byte transmit FIFO

• 16 byte receive FIFO with error flags

• Automatic hardware/software flow control

• Programmable Xon/Xoff characters

• Independent transmit and receive control

• Software selectable Baud Rate Generator pre-

scaleable clock rates of 1X or 4X

• Four selectable transmit/receive FIFO interrupt trig-

ger levels

• Standard modem interface or Infrared IrDA encode/

decoder interface

• Sleep mode ( 200µA stand-by )

• Low operating current ( 1.2mA typ.)

N.C. 1

D5 2

D6 3

D7 4

RCLK 5

N.C. 6

RX 7

TX 8

CS0 9

CS1 10

-CS2 11

-BAUDOUT 12

XR16C580CQ48

36 N.C.

35 RESET

34 -OP1

33 -DTR

32 -RTS

31 -OP2

30 INT

29 -RXRDY

28 A0

27 A1

26 A2

25 N.C.

ORDERING INFORMATION

Part number

ST16C580CQ48

ST16C580IQ48

Package

Operating temp

48-Lead TQFP 0° C to + 70° C

48-Lead TQFP -40° C to + 85° C

*Note 1 Covered by U.S. Patent #5,649,122.

Device Status

Active

Active

Rev. 1.22

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017

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